Debian is a computer operating system composed of software packages released as free and open source software primarily under the GNU General Public License along with other free software licenses.[3]Debian GNU/Linux, which includes the Linux kernel and GNU OS tools,[4] is a popular and influential GNU/Linux distribution.[5] It is distributed with access to repositories containing thousands of software packages ready for installation and use. Debian is known for relatively strict adherence to the Unix and free software philosophies[6] as well as using collaborative software development and testing processes.[7] Debian can be used on a variety of hardware, from NAS/SAN devices to phones, laptops, desktops and servers. It focuses on stability and security and is used as a base for many other distributions.

LIO has been the default block storage target from Debian 'wheezy' (freeze: June 2012).